/* === ALAB Energiesysteme - Premium Modern Design System === */

/* Root Variables - Design System */
:root {
    /* Gold Color Palette - Preserved */
    --gold-primary: #E6C23C;
    --gold-secondary: #E5C44D;
    --gold-accent: #F3D663;
    --gold-light: #FFE69C;
    --gold-dark: #C9A62E;
    
    /* Modern Neutral Palette */
    --neutral-50: #FAFAFA;
    --neutral-100: #F5F5F5;
    --neutral-200: #E5E5E5;
    --neutral-300: #D4D4D4;
    --neutral-400: #A3A3A3;
    --neutral-500: #737373;
    --neutral-600: #525252;
    --neutral-700: #404040;
    --neutral-800: #262626;
    --neutral-900: #171717;
    --neutral-950: #0A0A0A;
    
    /* System Colors */
    --background: #FFFFFF;
    --surface: #FAFAFA;
    --card: #FFFFFF;
    --text-primary: #0F0F0F;
    --text-secondary: #525252;
    --text-muted: #737373;
    --border: rgba(0, 0, 0, 0.06);
    
    /* Modern Shadows - Subtle & Layered */
    --shadow-xs: 0 1px 2px rgba(0, 0, 0, 0.05);
    --shadow-sm: 0 2px 4px rgba(0, 0, 0, 0.04), 0 1px 2px rgba(0, 0, 0, 0.06);
    --shadow-md: 0 4px 6px rgba(0, 0, 0, 0.02), 0 2px 4px rgba(0, 0, 0, 0.04);
    --shadow-lg: 0 10px 15px rgba(0, 0, 0, 0.03), 0 4px 6px rgba(0, 0, 0, 0.02);
    --shadow-xl: 0 20px 25px rgba(0, 0, 0, 0.03), 0 8px 10px rgba(0, 0, 0, 0.02);
    --shadow-2xl: 0 25px 50px rgba(0, 0, 0, 0.05);
    
    /* Gold Shadows for Premium Feel */
    --shadow-gold-sm: 0 2px 8px rgba(230, 194, 60, 0.15);
    --shadow-gold-md: 0 4px 16px rgba(230, 194, 60, 0.2);
    --shadow-gold-lg: 0 8px 32px rgba(230, 194, 60, 0.25);
    
    /* Modern Spacing System */
    --space-xs: 0.25rem;
    --space-sm: 0.5rem;
    --space-md: 1rem;
    --space-lg: 1.5rem;
    --space-xl: 2rem;
    --space-2xl: 3rem;
    --space-3xl: 4rem;
    
    /* Border Radius */
    --radius-sm: 0.375rem;
    --radius-md: 0.5rem;
    --radius-lg: 0.75rem;
    --radius-xl: 1rem;
    --radius-2xl: 1.5rem;
    --radius-full: 9999px;
    
    /* Typography Scale */
    --font-xs: 0.75rem;
    --font-sm: 0.875rem;
    --font-base: 1rem;
    --font-lg: 1.125rem;
    --font-xl: 1.25rem;
    --font-2xl: 1.5rem;
    --font-3xl: 1.875rem;
    --font-4xl: 2.25rem;
    --font-5xl: 3rem;
    
    /* Line Heights */
    --leading-tight: 1.25;
    --leading-snug: 1.375;
    --leading-normal: 1.5;
    --leading-relaxed: 1.625;
    --leading-loose: 2;
    
    /* Transitions - Performance Optimized */
    --transition-fast: 150ms cubic-bezier(0.4, 0, 0.2, 1);
    --transition-base: 200ms cubic-bezier(0.4, 0, 0.2, 1);
    --transition-slow: 300ms cubic-bezier(0.4, 0, 0.2, 1);
    --transition-slower: 500ms cubic-bezier(0.4, 0, 0.2, 1);
}

/* Modern CSS Reset */
*, *::before, *::after {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

/* Modern Typography System */
html {
    font-size: 16px;
    -webkit-text-size-adjust: 100%;
    -moz-tab-size: 4;
    tab-size: 4;
}

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', system-ui, sans-serif;
    font-size: var(--font-base);
    line-height: var(--leading-normal);
    color: var(--text-primary);
    background: var(--background);
    min-height: 100vh;
    overflow-x: hidden;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
    text-rendering: optimizeLegibility;
    font-feature-settings: 'kern' 1, 'liga' 1, 'calt' 1;
}

/* Hero Section - Modern Minimal Design */
.alab-hero {
    position: relative;
    width: 100%;
    padding: var(--space-xl) 0;
    background: linear-gradient(180deg, var(--surface) 0%, var(--background) 100%);
    overflow: hidden;
}

/* Subtle Background Pattern */
.alab-hero::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background-image: radial-gradient(circle at 1px 1px, rgba(230, 194, 60, 0.03) 1px, transparent 1px);
    background-size: 40px 40px;
    pointer-events: none;
    opacity: 0.5;
}

.alab-hero .wrap {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--space-2xl);
    align-items: center;
    max-width: 1600px;
    margin: 0 auto;
    padding: 0 var(--space-2xl);
    position: relative;
    z-index: 1;
}

/* Modern Card Design - Clean & Minimal */
.glass-card {
    background: var(--card);
    border: 1px solid var(--border);
    border-radius: var(--radius-2xl);
    box-shadow: var(--shadow-sm);
    position: relative;
    overflow: hidden;
    transition: all var(--transition-base);
    transform: translateZ(0);
    will-change: transform;
}

.glass-card:hover {
    box-shadow: var(--shadow-lg);
    transform: translateY(-2px);
    border-color: rgba(230, 194, 60, 0.2);
}

/* Subtle Gold Accent Line */
.glass-card::before {
    content: "";
    position: absolute;
    top: 0;
    left: 50%;
    transform: translateX(-50%);
    width: 60%;
    height: 1px;
    background: linear-gradient(90deg, transparent, var(--gold-primary), transparent);
    opacity: 0.6;
}

/* Remove heavy animations for better performance */
.glass-card .laser,
.shine-effect {
    display: none;
}

/* Hero Media - Modern Clean Layout */
.hero-media {
    position: relative;
    padding: 0;
    height: 100%;
    min-height: 400px;
}

.hero-media .frame {
    position: relative;
    width: 100%;
    height: 100%;
    border-radius: var(--radius-xl);
    overflow: hidden;
    background: var(--neutral-100);
}

.hero-media img {
    display: block;
    width: 100%;
    height: 100%;
    object-fit: cover;
    object-position: center;
    transition: transform var(--transition-slow), opacity var(--transition-base);
    will-change: transform, opacity;
}

.hero-media:hover img {
    transform: scale(1.02);
}

/* Modern Tab Overlay */
.overlay {
    position: absolute;
    left: var(--space-lg);
    right: var(--space-lg);
    bottom: var(--space-lg);
    display: flex;
    flex-direction: column;
    gap: var(--space-md);
    pointer-events: none;
    z-index: 10;
}

.overlay .tabs {
    display: flex;
    gap: var(--space-sm);
    background: rgba(255, 255, 255, 0.9);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    padding: var(--space-xs);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-lg);
    pointer-events: auto;
}

.tab-btn {
    flex: 1;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: var(--space-sm);
    padding: var(--space-sm) var(--space-md);
    border-radius: var(--radius-md);
    background: transparent;
    border: none;
    font-family: 'Inter', sans-serif;
    font-weight: 500;
    font-size: var(--font-sm);
    color: var(--text-secondary);
    cursor: pointer;
    transition: all var(--transition-fast);
    position: relative;
    -webkit-tap-highlight-color: transparent;
}

.tab-btn::after {
    content: '';
    position: absolute;
    bottom: -2px;
    left: 50%;
    transform: translateX(-50%) scaleX(0);
    width: 80%;
    height: 2px;
    background: var(--gold-primary);
    transition: transform var(--transition-base);
}

.tab-btn:hover {
    color: var(--text-primary);
    background: rgba(230, 194, 60, 0.05);
}

.tab-btn.active {
    color: var(--gold-dark);
    background: rgba(230, 194, 60, 0.1);
    font-weight: 600;
}

.tab-btn.active::after {
    transform: translateX(-50%) scaleX(1);
}

.tab-btn .tab-icon {
    display: none; /* Remove emoji icons for cleaner look */
}

/* Modern Tab Panels */
.tab-panel {
    pointer-events: auto;
    display: none;
    padding: var(--space-lg);
    margin-top: var(--space-sm);
    border-radius: var(--radius-lg);
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border: 1px solid var(--border);
    box-shadow: var(--shadow-md);
}

.tab-panel.show {
    display: block;
    animation: fadeIn var(--transition-slow);
}

@keyframes fadeIn {
    from { opacity: 0; transform: translateY(10px); }
    to { opacity: 1; transform: translateY(0); }
}

.tab-panel h3 {
    margin: 0 0 var(--space-sm);
    font-family: 'Inter', sans-serif;
    font-weight: 600;
    font-size: var(--font-lg);
    color: var(--text-primary);
}

.tab-panel p {
    margin: 0 0 var(--space-md);
    font-family: 'Inter', sans-serif;
    font-weight: 400;
    font-size: var(--font-sm);
    line-height: var(--leading-relaxed);
    color: var(--text-secondary);
}

.panel-cta {
    display: inline-flex;
    align-items: center;
    gap: var(--space-sm);
    padding: var(--space-sm) var(--space-lg);
    border-radius: var(--radius-md);
    background: var(--gold-primary);
    color: white;
    text-decoration: none;
    font-family: 'Inter', sans-serif;
    font-weight: 500;
    font-size: var(--font-sm);
    transition: all var(--transition-base);
    box-shadow: var(--shadow-sm);
}

.panel-cta:hover {
    background: var(--gold-dark);
    transform: translateY(-1px);
    box-shadow: var(--shadow-md);
}

.panel-cta svg {
    transition: transform var(--transition-fast);
    width: 14px;
    height: 14px;
}

.panel-cta:hover svg {
    transform: translateX(2px);
}

/* Hero Content - Clean Typography Focus */
.hero-content {
    padding: var(--space-xl);
    display: flex;
    flex-direction: column;
    justify-content: center;
    position: relative;
}

/* Subtle Glow Effect */
.glow-orb {
    position: absolute;
    width: 300px;
    height: 300px;
    background: radial-gradient(circle, rgba(230, 194, 60, 0.1) 0%, transparent 70%);
    border-radius: 50%;
    top: -100px;
    right: -100px;
    opacity: 0.5;
    filter: blur(60px);
    pointer-events: none;
    animation: none; /* Remove animation for better performance */
}

/* Hero Overline - Minimal & Elegant */
.hero-overline {
    display: flex;
    align-items: center;
    gap: var(--space-md);
    margin-bottom: var(--space-md);
}

.overline-text {
    font-family: 'Inter', sans-serif;
    font-weight: 500;
    font-size: var(--font-sm);
    letter-spacing: 0.05em;
    text-transform: uppercase;
    color: var(--text-muted);
}

.overline-badge {
    padding: var(--space-xs) var(--space-sm);
    background: rgba(230, 194, 60, 0.1);
    color: var(--gold-dark);
    font-family: 'Inter', sans-serif;
    font-weight: 600;
    font-size: var(--font-xs);
    text-transform: uppercase;
    letter-spacing: 0.05em;
    border-radius: var(--radius-full);
    border: 1px solid rgba(230, 194, 60, 0.2);
}

/* Hero Title - Bold & Modern */
.hero-title {
    font-family: 'Inter', sans-serif;
    font-weight: 700;
    font-size: clamp(1.75rem, 3vw, 2.5rem);
    line-height: var(--leading-tight);
    letter-spacing: -0.02em;
    margin: 0 0 var(--space-md);
    color: var(--text-primary);
}

.title-highlight {
    color: var(--gold-primary);
    position: relative;
    display: inline-block;
}

.title-highlight::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    right: 0;
    height: 3px;
    background: linear-gradient(90deg, var(--gold-primary), var(--gold-accent));
    opacity: 0.5;
}

/* Hero Text - Clear & Readable */
.hero-text {
    font-family: 'Inter', sans-serif;
    font-weight: 400;
    font-size: var(--font-base);
    line-height: var(--leading-normal);
    color: var(--text-secondary);
    margin: 0 0 var(--space-lg);
    max-width: 100%;
}

/* Feature Chips - Modern Pills */
.feature-chips {
    display: flex;
    flex-wrap: wrap;
    gap: var(--space-sm);
    margin: var(--space-md) 0;
}

.chip {
    display: inline-flex;
    align-items: center;
    gap: var(--space-xs);
    padding: var(--space-sm) var(--space-md);
    border-radius: var(--radius-full);
    background: var(--surface);
    border: 1px solid var(--border);
    font-family: 'Inter', sans-serif;
    font-weight: 500;
    font-size: var(--font-sm);
    color: var(--text-secondary);
    transition: all var(--transition-fast);
    cursor: default;
}

.chip svg {
    width: 16px;
    height: 16px;
    color: var(--gold-primary);
    flex-shrink: 0;
}

.chip:hover {
    background: rgba(230, 194, 60, 0.05);
    border-color: rgba(230, 194, 60, 0.3);
    color: var(--text-primary);
    transform: translateY(-1px);
}

/* Stats Row - Clean Metrics */
.stats-row {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: var(--space-lg);
    margin: var(--space-lg) 0;
    padding: var(--space-md) 0;
    border-top: 1px solid var(--border);
}

.stat-item {
    text-align: left;
}

.stat-number {
    font-family: 'Inter', sans-serif;
    font-weight: 700;
    font-size: var(--font-2xl);
    color: var(--text-primary);
    line-height: 1;
    margin-bottom: var(--space-xs);
}

.stat-number::after {
    content: '+';
    color: var(--gold-primary);
    font-size: 0.8em;
    margin-left: 2px;
}

.stat-label {
    font-family: 'Inter', sans-serif;
    font-weight: 400;
    font-size: var(--font-sm);
    color: var(--text-muted);
    text-transform: capitalize;
}

/* CTA Buttons - Modern & Clean */
.cta-row {
    display: flex;
    align-items: center;
    gap: var(--space-md);
    margin: var(--space-lg) 0 0;
}

.hero-cta {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: var(--space-sm);
    padding: var(--space-sm) var(--space-lg);
    border-radius: var(--radius-md);
    font-family: 'Inter', sans-serif;
    font-weight: 500;
    font-size: var(--font-sm);
    text-decoration: none;
    transition: all var(--transition-base);
    position: relative;
    cursor: pointer;
    -webkit-tap-highlight-color: transparent;
}

.primary-cta {
    background: var(--gold-primary);
    color: white;
    box-shadow: var(--shadow-sm);
}

.primary-cta:hover {
    background: var(--gold-dark);
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
}

.cta-ghost {
    background: transparent;
    border: 1px solid var(--border);
    color: var(--text-primary);
}

.cta-ghost:hover {
    background: var(--surface);
    border-color: var(--gold-primary);
    color: var(--gold-dark);
}

.hero-cta svg {
    width: 20px;
    height: 20px;
    transition: transform var(--transition-fast);
}

.hero-cta:hover svg {
    transform: translateX(3px);
}

/* Minimal Animations for Better Performance */
@keyframes fadeIn {
    from { opacity: 0; }
    to { opacity: 1; }
}

@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(20px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

/* Responsive Design - Mobile First Approach */
@media (max-width: 1024px) {
    .alab-hero .wrap {
        grid-template-columns: 1fr;
        gap: var(--space-2xl);
    }
    
    .hero-media {
        min-height: 400px;
    }
    
    .stats-row {
        grid-template-columns: repeat(3, 1fr);
        gap: var(--space-lg);
    }
}

@media (max-width: 768px) {
    :root {
        --font-5xl: 2.5rem;
        --font-4xl: 2rem;
        --font-3xl: 1.5rem;
    }
    
    .alab-hero {
        padding: var(--space-2xl) 0;
    }
    
    .alab-hero .wrap {
        padding: 0 var(--space-lg);
    }
    
    .hero-content {
        padding: var(--space-xl);
    }
    
    .hero-title {
        font-size: clamp(1.75rem, 5vw, 2.5rem);
    }
    
    .hero-text {
        font-size: var(--font-base);
    }
    
    .stats-row {
        grid-template-columns: 1fr;
        gap: var(--space-lg);
        text-align: center;
    }
    
    .stat-item {
        text-align: center;
    }
}

@media (max-width: 480px) {
    .alab-hero .wrap {
        padding: 0 var(--space-md);
        gap: var(--space-xl);
    }
    
    .glass-card {
        border-radius: var(--radius-xl);
    }
    
    .hero-content {
        padding: var(--space-lg);
    }
    
    .hero-media {
        min-height: 300px;
    }
    
    .feature-chips {
        gap: var(--space-xs);
    }
    
    .chip {
        font-size: var(--font-xs);
        padding: var(--space-xs) var(--space-sm);
    }
    
    .cta-row {
        flex-direction: column;
        gap: var(--space-sm);
        width: 100%;
    }
    
    .hero-cta {
        width: 100%;
    }
    
    .overlay {
        left: var(--space-md);
        right: var(--space-md);
        bottom: var(--space-md);
    }
    
    .overlay .tabs {
        gap: var(--space-xs);
    }
    
    .tab-btn {
        font-size: var(--font-xs);
        padding: var(--space-xs) var(--space-sm);
    }
    
    .tab-panel {
        padding: var(--space-md);
    }
    
    .tab-panel h3 {
        font-size: var(--font-base);
    }
    
    .tab-panel p {
        font-size: var(--font-sm);
    }
    
    /* Performance optimizations for mobile */
    .glow-orb {
        display: none;
    }
    
    * {
        animation-duration: 0s !important;
        animation-delay: 0s !important;
    }
}

/* Print Styles */
@media print {
    .alab-hero {
        background: white;
    }
    
    .overlay,
    .glow-orb,
    .hero-cta {
        display: none;
    }
}

/* Accessibility - Focus States */
:focus-visible {
    outline: 2px solid var(--gold-primary);
    outline-offset: 2px;
    border-radius: var(--radius-sm);
}

button:focus-visible,
a:focus-visible {
    outline: 2px solid var(--gold-primary);
    outline-offset: 2px;
}

/* Performance Optimizations */
@supports (contain: layout style paint) {
    .glass-card,
    .chip,
    .tab-panel {
        contain: layout style paint;
    }
}

/* Reduced Motion */
@media (prefers-reduced-motion: reduce) {
    *,
    *::before,
    *::after {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
        scroll-behavior: auto !important;
    }
}

/* High Contrast Mode */
@media (prefers-contrast: high) {
    .glass-card {
        border-width: 2px;
    }
    
    .hero-cta {
        border: 2px solid currentColor;
    }
}

/* Dark Mode Support (Future Enhancement) */
@media (prefers-color-scheme: dark) {
    /* Dark mode variables can be defined here */
}

/* Reduce Motion Class for Performance */
body.reduce-motion * {
    animation: none !important;
    transition: none !important;
}

/* Loading State */
body:not(.loaded) {
    overflow: hidden;
}

body.loaded {
    overflow-x: hidden;
}

/* Smooth Scrolling */
html {
    scroll-behavior: smooth;
}

@media (prefers-reduced-motion: reduce) {
    html {
        scroll-behavior: auto;
    }
}

/* Additional Typography Improvements */
h1, h2, h3, h4, h5, h6 {
    font-feature-settings: 'kern' 1, 'liga' 1, 'calt' 1;
    text-rendering: optimizeLegibility;
}

/* Better Link Focus */
a {
    position: relative;
    text-decoration-skip-ink: auto;
}

/* Utility Classes */
.visually-hidden {
    position: absolute;
    width: 1px;
    height: 1px;
    padding: 0;
    margin: -1px;
    overflow: hidden;
    clip: rect(0, 0, 0, 0);
    white-space: nowrap;
    border: 0;
}